Last week, PC maker Xi3 announced that it had entered a deal with Valve to create a "development stage system" that's designed to run the Big Picture mode for Valve's Steam client. While details about that product have yet to be revealed, Xi3 has another interesting PC that it will launch in the second quarter of 2013.

Xi3's press release announces the Z3RO Pro Computer, a full PC that the company says is the size of a small paperback book (its exact dimensions are 1.875 x 4.875 x 3.625 inches). The company makes the bold claim that this new PC "marks the end of desktop computing as we’ve known it."

The specs on the Z3RO Pro Computer include an unnamed dual-core 64-bit, x86-based processor with a clock speed of 1.65GHz, along with an integrated graphics processor. It holds up to 4 GB of RAM and can support a SSD of up to 1 TB of storage. It also has one HDMI/DisplayPort and another Mini-DisplayPort, along with an Ethernet port and four eSATAp 3.0 port.

Xi3 is taking pre-orders for the Z3RO Pro Computer for $399. While it will come reinstalled with the openSUSE version of Linux, Xi3 says it can run other operating systems, including Windows 8.